<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <p>
        This paragraph contains both
        <em>
            emphasis and
            <strong>
                strong
            </strong>
        </em>
    </p>
</body>
<style>
    p {
        font-size: 120px;
    }
/* 
    em {
        font-size: 160px;
    } */

    strong {
        font-size: 135%;
    }
</style>

</html>